CN1196841C

CN1196841C - Improved self-raising platform assembly

Info

Publication number: CN1196841C
Application number: CN01815453.0A
Authority: CN
Inventors: 吉恩·G·罗比亚尔
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-11
Filing date: 2001-09-05
Publication date: 2005-04-13
Anticipated expiration: 2021-09-05
Also published as: US6883643B2; EP1317593A1; MXPA03002063A; AU9353401A; AU2001293534B2; EP1317593B1; US7090051B2; DE60111852T2; CA2317987A1; US20040020717A1; CN1455839A; WO2002020919A1; US20050183905A1; DE60111852D1; ATE299215T1

Abstract

A self-raising platform assembly (1) comprising at least one mast (3, 5, 113) along which a platform (13) may be moved up or down including the following: a) a base element (9) with a supporting plate (25) connected to a jack (27) and several stabilizer arms (33, 37) incorporating height adjustment. b) modular mast sections (7) made from rectangular sections with openings (63) cut out to form steps and bars (55) to allow adjacent sections to be bolted together. c) hydraulically operated ram lifting mechanism (73, 83, 84) with hooks (77, 79, 81) to engage steps on the mast to raise and lower the platform. d) a plastic lined sleeve (17, 19) on the platform which slides against the mast. e) a modular platform which can be lengthened or widened by adding additional modules (101, 103).

Description

Improved self-raising platform assembly

Technical field

The present invention relates to several improvement to the basic structure of scaffold, below scaffold is called " stage apparatus ", stage apparatus is designed to and can to help the workman this wall be constructed, repair or other work near the automatic upright or setting of the wall of building.

More specifically, the present invention relates to improvement to a kind of like this self-raising platform assembly, this elevating stage device comprises at least one mast, utilize elevating mechanism that one platform is moved up and down along this at least one mast, this elevating mechanism comprises a kind of hydraulic operation piston that can stretch out and withdraw along mast.The improvement of being done be primarily aimed in:

The structure of the pedestal of-at least one mast;

The structure of-at least one mast;

The structure of-elevating mechanism and operation thereof;

-along the mode of at least one pylon guide platform; And

The structure of-platform self.

Background technology

At building field, the known and widely-used stage apparatus that is made of modular member of people can make this stage apparatus erect near a building, and the workman just can carry out work to this building like this.

As the limiting examples of this device, can in their disclosed stage apparatus, utilize cable hoist mechanism to come mobile platform with reference to United States Patent(USP) Nos. 3323616 (BEST) and 5159993 (ST-GERMAIN A.).

Also can be with reference to U.S. Patent No. 4809814 (ST-GERMAIN J.), in their disclosed stage apparatus, utilize one group of hydraulic operation push rod and hook-like part to come mobile platform, with the design of this hook-like part and be positioned to step in the mast and be meshed, so that lifting platform.

Also can be with reference to United States Patent(USP) Nos. 4293054 (PIERI) and 4294332 (READY), their disclosed stage apparatus comprise two masts, utilize gear that workbench is moved up and down along these two masts, this gear is by motor and via suitable actuator drives.This gear is meshed with the respective rack that the bar that is installed in mast forms on the part.

Although all these existing stage apparatus are all very effective, but still need improve them in many aspects, particularly in the structure and the operating aspect of its basic module, in order to make stage apparatus be easy to use, its basic module must be strong, safe, reliable, be easy to assemble and preferably cordwood.

Summary of the invention

Therefore, main purpose of the present invention is to satisfy above needs, provide a kind of through improved in above prior art reference the stage apparatus of disclosed type, this through improved stage apparatus very firmly, reliable, the needs that are easy to assemble and adapt to the user, also as safe as a house certainly.

Comprise according to this stage apparatus of the present invention:

At least one mast that is made of modular member, this modular member are designed to removably interconnect according to end-to-end relation, and each root in this at least one mast all is positioned on the ground;

Levelling bench, it is can be installed on this at least one mast along the mode that this at least one mast moves up and down, this platform comprises the framework that is formed with at least one sleeve pipe, and this at least one mast passes each self-corresponding sleeve pipe and stretch, and this platform also comprises a platform floor; And

Elevating mechanism is used for moving up and down this platform along this at least one mast, and this elevating mechanism is installed on this platform and this hoist of this platform operations certainly.

According to the present invention, this stage apparatus of above type is characterised in that it also comprises in the following feature (a) to (e) one or multinomial:

(a) each root in this at least one mast all has upwardly extending pedestal on the top of a bigger gripper shoe, this gripper shoe links to each other with a jack in being contained in this pedestal, this pedestal also has an outside framework, at least one arm of stability is connected on this outside framework, greatly improve the height of this stage apparatus thus and regulated, and improved the lateral stability of this stage apparatus greatly;

(b) each modular member of each root all is designed to form the step of equi-spaced apart and is used as a species stage in this at least one mast, the top and bottom of this each modular member all have L shaped reinforcing transverse bar, the screw that use stretches upwards connects the transverse bar of each adjacent component, can make thus connect more firmly between adjacent component, more reliable;

(c) this elevating mechanism comprises:

Main hydraulic cylinder, this main hydraulic cylinder comprise a upper end that can pivot and be connected with this platform sleeve pipe, and a lower end, it is outstanding from this lower end to have a free-ended piston, at least one uncinus is pivotably mounted on this piston, thereby is meshed with this step along corresponding mast equi-spaced apart

At least one hook-type bar, this hook-type bar has the upper end that can pivot and be connected with this platform, and a lower end, this lower end is shaped and is designed to mesh and be hooked on the step of corresponding mast; And

Hydraulic cylinder after at least two is used for applying lateral pressure to this main hydraulic cylinder, and drives this hook-type bar, alternately meshes this step or this step withdrawal certainly to force this hook-type bar;

Thus, when pushing away the piston of this main hydraulic cylinder downwards, just promote this platform, thereby improved the efficient and the speed of entire mechanism;

(d) utilize the l shaped gasket of making by the super high molecular weight plastic material to come and guide at least one sleeve pipe of this platform each along corresponding mast location, when this platform moves up and down, this pad just contacts the corner of corresponding mast and slides along the corner of this corresponding mast, can obtain level and smooth thus and rotates reliably; And

(e) by this platform is connected with extra modular platform parts, can change the width and the length of this platform easily.

Preferably, according in the feature (a) to (e) at least two preferably including whole this features (a) of the present invention should comprising to (e) through improved stage apparatus.

Further preferred, each modular member of each root all is made of metal sheet in this at least one mast, this metal sheet is the pipe of rectangle through folding and welding to form the cross section, in this rectangular section tube, has bigger hole, to form this step and to make these parts be stairstepping, reinforce this pipe with transverse bar, and be welded with one group of longitudinally guiding bar, thereby can be with this modular member according to end-to-end relation location and be fixed on another same parts at an end of each modular member.

In reference the following drawings, read explanation to the several non-limiting preferred embodiments of the present invention after, can understand the present invention and advantage thereof better.

Brief description of drawings

Fig. 1 is a kind of perspective view through improved stage apparatus according to first preferred embodiment of the invention;

Fig. 2 is the elevation of stage apparatus shown in Figure 1;

Fig. 3 is the left side view of stage apparatus shown in Fig. 1 and 2;

Fig. 4 is the vertical view of stage apparatus shown in Fig. 1 to 3;

Fig. 5 is the wherein perspective view of the pedestal of a mast of stage apparatus shown in Fig. 1 to 4;

Fig. 6 is the vertical view of mast pedestal shown in Figure 5;

Fig. 7 is the lateral view of mast pedestal shown in Figure 5;

Fig. 8 is through the side perspective view of the modular mast of improved stage apparatus part shown in Fig. 1 to 4;

Fig. 9 a, 9b and 9c are respectively the positive sectional views of modular mast part shown in Figure 8, side cross-sectional view and vertical view;

Figure 10 is the elevation near the partial cross-section of the terrace part of one of them pylon, has represented in order to promote and to lock the main hydraulic cylinder and the hook-like part of platform along mast;

Figure 11 is the sectional view along Figure 10 center line XI-XI;

Figure 12 is a kind of perspective view through improved stage apparatus according to second preferred embodiment of the invention, and its place that is different from first preferred embodiment mainly is its land lengths;

Figure 13 is the perspective view of the middle body of stage apparatus shown in Fig. 1 to 12, and described Figure 13 has shown how further modular member to be connected on the middle body of this platform, to regulate the needs that its surf zone and structure satisfy the workman;

Figure 14 is a width of cloth exploded, partial, perspective view, the connection between the two adjacent modular members of expression platform;

Figure 15 is the perspective view according to a kind of pedestal and single mast through improved stage apparatus of third preferred embodiment of the invention.

The description of preferred embodiment

Shown in Fig. 1 to 11, comprise at least one and be preferably the mast 3 of two or more horizontal interval according to stage apparatus 1 first preferred embodiment of the invention, improved, 5, every mast all is made of modular member 7, and this modular member 7 is designed to removably interconnect according to end-to-end relation.

Every

mast

3,5 all has close building " S " (see figure 3) that will be erected or repair and is arranged on ground pedestal 9.When repairing this building " S ", pull bar 11 just is installed, thereby is made mast be connected with building (seeing Fig. 3 again).

Levelling bench 13 is installed on the

mast

3,5 in such a way, thereby makes it easily to move up and down this levelling bench 13 along this mast 3,5.Levelling bench 13 comprises that one has the framework 15 of a plurality of

sleeves

17,19, and the quantity of these a plurality of

sleeves

17,19 is corresponding to the quantity of mast 3,5.Each sleeve all is designed for and holds a corresponding pylon, and can slide along this corresponding pylon.Preferably, the front of this sleeve is towards left open, thereby allows this levelling bench 13 just can move up and down along mast not needing to remove under the situation of pull bar 11.Certainly, platform floor 21 and safety barrier 23 also are installed on this framework 15.

One elevating mechanism also is provided, has been used for when repairing building, moving up and down this levelling bench 13 along mast 3,5.This elevating mechanism is installed on the platform and can moves up and down this levelling bench 13 along

mast

3,5, thereby needing to avoid the extras of crane one class.

More than the basic structure of disclosed this stage apparatus 1 itself be known, therefore do not need it is further described.Because the application and the advantage of this stage apparatus 1 also are known, therefore do not need it is explained again yet.About this point, can be with reference to already mentioned all patents in above " background of invention ".

Illustrate that as above the present invention mainly is several improvement to above disclosed basic structure.During these improve each all structurally is independent of other, and each importance with respect to other depends primarily on user's needs.Accordingly, although should can only comprise during these improve one through improved stage apparatus according to of the present invention, in fact it is preferably and comprises these in improving several, and best is to comprise these whole improvement.Owing to, will be in no particular order in the described improved order of describing now with above same.

First structure that is the pedestal 9 of every mast during these improve.

As shown in Figs. 5 to 7, each pedestal 9 stretches upwards on a big gripper shoe 25, and this gripper shoe 25 self links to each other with the bottom of a vertically adjustable jack 27, and this jack 27 is installed in the pedestal 9.To understand as us, preferably come this jack 27 of Mechanical Driven via a gear-box 28, regulate the position of corresponding mast with the ground that relatively is placed with plate 25 thereon, thus any deviation of compensating platform on location and/or balance.

As shown in Figs. 5 to 7, each pedestal 9 all is rigidly connected with an outside framework 29 that is made of bar, at least one and be preferably two or more arms of stability 33,37 and be installed on this bar.

As clear expression, best in these arms is installed in the framework 29 in the mode (seeing the arrow " A " among Fig. 6) of horizontal slip but for example be designated 37 arm.Other arm 33 preferably is installed on this framework 29 in the mode (seeing the arrow " B " among Fig. 6) that can pivot in horizontal plane.For this purpose, utilize pin 35 that each arm of stability 33 is connected with an end of a wherein bar that forms outside framework 29.Preferably, each arm of stability 33 has and the contacted gripper shoe 39 in ground.Also preferred, the plate 39 of the arm of stability 37 is installed on the telescopic piston 38, can manually or electrically drive this piston 38 via a gear-box 40.

The arm of stability 33,37 is installed and can regulates this arm of stability 33,37 and be easy to the mast pedestal of stage apparatus 1 is installed on the ground that will use this device 1 with regard to making.In addition, this gives on the ground that is centered on directed and locate this arm maximum degree of freedom is provided, thereby makes the mast that is installed on the pedestal correctly towards vertical direction.

As shown, pedestal 9 is independent fully mutually.This is because locate this

mast

3,5 possibly on different mutually horizontal planes.This gives assembling and splits whole device provides maximum compliance (versatility).

Second structure of improving the modular member 7 be

mast

3,5 that the basic structure of above disclosed stage apparatus 1 is made.

As Fig. 1 to 4, (more particularly see Fig. 8) shown in 8 to 12 and 15, each modular member 7 all is parallelepiped-shaped and is made of a metal sheet 61, and this metal sheet 61 is folding and weld, and has the pipe of square-section with formation.Has bigger hole 63 in the inside of this pipe that forms by plate 61, with the step that limits equi-spaced apart and thereby make this pipe present " ladder " shape.Can use laser beam to cut out these holes with very easy and effective and efficient manner.In this pipe, be welded with transverse bar 65 on four sides corresponding, to reinforce this pipe with each step level.

For ease of connection end-to-end between the different modular member 7, the guide peg 55 that it is rectangle that an end of each modular member 7 all has one group of cross section is positioned to this guide peg 55 to insert in the corner of pipe opposite end of adjacent mast parts.Each bar 55 all has a hole 57, and when these mast parts and the end-to-end link of adjacent mast parts, this hole 57 is aimed at the respective aperture 59 of the pipe that is positioned at the adjacent mast parts.This just can be by inserting screw in the corner of mast parts the locking that these mast parts are in alignment.Preferably, an available hollowcore slab is reinforced the hole 59 in the plate 61 that forms each modular member 7, to prevent any undesirable wearing and tearing, produces the gap when wearing and tearing can make this hole be connected with screw.

Preferably, pair of L-shaped is reinforced transverse bar 49 be fixed on this pipe, and the upper and lower side of close this pipe.In the vertical component of these bars 49 and horizontal component, has hole 51.These holes 51 make after these adjacent mast parts being installed end-to-end or abreast (as shown in figure 15), can utilize to stretch upwards or the screw of extending transversely connects this adjacent block parts 7 rigidly.In a single day this just makes mast more firm and safer, because they are interconnected like this, has just greatly reduced the intercepted danger of screw that is inserted in the

hole

57,59.

The major advantage of being somebody's turn to do " pipe " shape mast modular member 7 shown in Fig. 8 and the 9a to 9c is that it is highly susceptible to manufacturing and cheap for manufacturing cost.Another advantage is that verified this mast parts are all more firm than all existing stairstepping mast parts that use at present.This improvement does not have anything to be worth, although this improvement is quite noticeable, it is not basic an improvement.In fact, also can use if necessary traditional stairstepping mast parts.Traditional stairstepping mast parts also can adopt L shaped transverse bar 49 and screw that the adjacent mast parts are rigidly connected mutually.

Certainly, when preparing pedestal 9, can adopt as above disclosed with connection mode blocking parts 7 identical manufacturing technologies.About this point, can the figure shows the shape and the structure of this tubulose pedestal of making by metal sheet 9 with reference to figure 5 and 7.

The 3rd improve structure and the operation be elevating mechanism to what the basic structure of above disclosed stage apparatus 1 was made, this elevating mechanism is used for moving up and down levelling bench 13 along

mast

3,5.

A kind of elevating mechanism is disclosed in the U.S. Patent No. 4809814 of Jean ST-GERMAN, this elevating mechanism comprises a pair of fixture that can be pivoted and be carried by the platform near every mast, this fixture alternately and continuously with the step engagement of mast, thereby this platform is suspended in (referring to the claim 1 of this piece patent) on the different level heights.One in this two fixture is made of mechanical transmissioning piece, and this mechanical transmissioning piece can be along contiguous mast, stretch out and withdraw with respect to platform, and it stretches out and the stroke of withdrawing equals the perpendicular separation of two adjacent steps.Another fixture is made of a uncinus.When utilizing this scalable component to promote or reducing platform, this two fixture is pressed to mast automatically be meshed with the step of vicinity to guarantee them.

In this piece patent No.4809814 in the independent one exemplary embodiment of invention disclosed, this mechanical transmissioning piece is made of a two-way effect hydraulic cylinder, thereby this hydraulic cylinder stretches upwards with certain angle and relies on gravity that pylon is exerted pressure, this hydraulic cylinder has the lower end that can pivot and be connected with platform framework, and a upper end, this upper end for hook-type to hook the transverse bar of the mast that forms step.Had this structure, when the withdrawal main hydraulic cylinder piston the time just can promote and lift this platform.

Be very similar to above disclosed the sort of elevating mechanism according to elevating mechanism of the present invention, but it operates in a completely different way, when the piston of main hydraulic cylinder stretches out, just promote and lift platform because the mounting means of main hydraulic cylinder only makes.In other words, in operation, main hydraulic cylinder is not upwards to even up platform, but upwards pushes away platform.

With reference to Figure 10 and 11, should comprise through the elevating mechanism of improved stage apparatus that this fixture comprised near one group of fixture of every mast according to the present invention:

-main hydraulic cylinder 73, has a upper end 74 that can pivot and be connected with platform sleeve pipe 17 structures, and a lower end, it is outstanding from this lower end to have a free-ended piston 75, and at least one uncinus 77 is pivotably mounted on this piston 75 to be meshed with a step in the modular member 7; And

-at least one and be preferably two hook-

type bar

79,81, the upper end 80 of this hook-type bar is connected with sleeve pipe 17 structures pivotly, the bottom of this hook-type bar is shaped and is designed to mesh and be hooked on another step of mast.

Therefore the first back hydraulic cylinder 83 is used for providing lateral pressure to main hydraulic cylinder 73, and forces the one or more uncinuses 77 that are connected with piston 75 and the corresponding step of mast to mesh.Another back hydraulic cylinder 84 is used to make hook-

type bar

79,81 around the said pivot that is positioned at their upper ends, thereby forces described

bar

79,81 to be meshed with another step of mast.

Preferably, two guide pegs 85 are fixed on the piston 75 of main hydraulic cylinder, thereby when driving this piston 75, two guide pegs 85 are with respect to the external surface parallel sliding of main hydraulic cylinder 73.This guide peg guarantees that around the axle rotation of himself at least one uncinus 77 is in operating position forever by preventing piston 75, thereby guarantees always correctly to locate this at least one uncinus 77 with respect to mast.As shown, for providing signal to controlling organization during near the switch (not shown) when 85 contacts one of this guide peg, thereby guarantee according to piston 75 positions of main hydraulic cylinder 73 backward hydraulic cylinder 83 apply correct pressure, in the surface of this guide peg 85, have recessed 87 of equi-spaced apart.

As described above, when pushing away this piston 75 downwards with regard to winding level platform 13.Because pressure is the whole surface that imposes on the piston head relative with piston rod, has so just improved the efficient of this elevating mechanism.Especially, accelerated hoisting velocity.In the process of lifting platform, when this uncinus 77 and hook-

type bar

79,81 were stretched out, their were through transverse bar 65, in case and they extend to the top of transverse bar 65, they just are back to transverse bar 65 to be meshed with this transverse bar 65.Certainly, control system also must comprise as people to be want when pylon is fallen platform, breaks away from the step of masts for making this uncinus 77 and hook-

type bar

79,81, drives back

hydraulic cylinder

83,84 to force the device of this

uncinus

77 and 79,81 withdrawals of hook-type bar.Certainly, this withdrawal must with alternately and continuous mode carry out, thereby guarantee always supporting this platform by uncinus 77 or hook-

type bar

79,81.

Should be noted that this elevating mechanism can comprise an independent uncinus 77, perhaps two uncinuses 77 (as shown in figure 11) parallel, that can pivot and be connected with the piston bottom end of main hydraulic cylinder.The shape of this uncinus 77 is very important.In fact, this uncinus 77 must have a finger portion 91 (see figure 10)s, and the size and shape of this finger portion 91 is arranged to be meshed with the step of mast.This uncinus 77 also must have the edge 93 that is positioned at finger portion 91 belows and gives prominence to downwards, thereby uncinus 77 is leaned against on the end of contiguous mast sidewall and piston 75, and thereby prevents that uncinus 77 is from upside down rotation.In other words, this uncinus 77 must be designed to automatically lock.

The 4th improve and to be sleeve pipe 17 is slidably mounted in mode on the

corresponding mast

3,5 what the basic structure of above disclosed stage apparatus 1 was made.

Up to now, for sleeve pipe is meshed with the L shaped corner of corresponding mast, people designed on sleeve pipe, install guide reel (referring to Fig. 5 of the U.S. Patent No. 4809814 of non-limitative example form and 6 and Fig. 5 and 8 of U.S. Patent No. 5159993).

It has been found that employing is by UHMW (super high molecular weight) plastic material, particularly the l shaped gasket 97 (seeing Figure 11) made of UHMW polyethylene can obtain guiding movement and runnability preferably preferably, and this l shaped gasket 97 is positioned to be meshed with the L shaped corner of mast parts 7.Had this quite wear-resisting pad 97, just one of them that can not take place in the roller broken and come off or jammed danger.In addition, it is very level and smooth that bootup process also becomes, and can fully control this bootup process.

The 5th improve the manufacture be levelling bench 13 to what the basic structure of above disclosed stage apparatus 1 was made.

As described above, platform comprises the framework 15 that is formed with one or

more sleeve pipes

17,19, and this

sleeve pipe

17,19 is designed for and holds corresponding mast 3,5.This framework 15 is supporting platform floor 21 and safety barrier 23, and this safety barrier 23 preferably removably is installed.For this purpose, the rail post of this guardrail 23 is designed to and can slips into and be locked in the vertical tube, this vertical tube is a part and the hole extension in alignment in platform floor 21 of framework 15.Can use C shape pin or other any proper device that rail post is locked in the corresponding pipe.

This levelling bench 13 can be for example 24 feet (7.3 meters) long and 6 feet (1.8 meters) wide.Its framework 15 can be made of the hollow section of vertical, horizontal and oblique extension.These pipes are welded to each other together.Select the length and the position of these pipes, make the vertical cross-section of levelling bench 13 be isosceles trapezoid.

According to certain preferred embodiment of the present invention shown in Figure 12, when needs prolong the width of this levelling bench 13 and/or length, provide extra modular platform parts (perhaps " wing plate ") 101,103 to prolong the width and/or the length of platform 13.When the building that will erect or repair is quite long, the length that just needs to prolong platform.When people attempt near or when contacting this building, just need to prolong the width of platform because mast can not the close enough building to approaching or contact this building (seeing Figure 15 a and 15b).

In the mode of limiting examples, it is long that these parts 101,103 can be respectively 8 feet (2.4 meters) and 4 feet (1.2 meters).Shown in Figure 11 to 14, these parts 101,103 have with the same isosceles trapezoid cross section of platform 13.As a result, these parts 101,103 can be connected with platform 13 in alignmently, as shown in figure 12, perhaps after with these parts 101,103 reversings, they vertically be connected with platform 13, as shown in figure 13.Certainly, for this purpose, the framework bottom surface of some parts will provide platform floor at least, for example is labeled as 103 parts among Figure 13.

Utilize bar 105 (seeing Figure 14) can easily realize levelling bench 13 frameworks and parts 101, connection between 103 the framework, this bar 105 is designed to insert in the hollow end of the adjacent frame part that will connect, utilize then and be inserted into hole 109, screw 107 in 110 is locked in the appropriate position this bar 105, hole 109 is positioned on the bar 105, and hole 110 is positioned at the frame unit (seeing Figure 14) that will insert described bar 105.Preferably, this bar 105 has different hole, space 109, thereby allows the end-to-end connection of adjacent frame part, and their end is in contact with one another or separates a little simultaneously.This " gap " makes can regulate the horizontal orientation of these parts 101,103 with respect to framework 15, and each parts can tilt slightly up or down.

As previously mentioned, this can comprise one or more mast through improved stage apparatus 1.In the embodiment shown in fig. 15, this stage apparatus comprises the mast 113 of independent " double size ", and this mast 113 is made of the

mast

3,5 of the type that adopts among two adjoining, above-mentioned disclosed first embodiment.Certainly, correspondingly to reequip the pedestal 119 of mast 113 and the sleeve pipe 115 on its platform framework.

Understandable as people, without departing from the present invention, can make numerous constructional variant to above disclosed various improvement.For instance, can change the shape and the interconnective mode of element of construction of element of construction, thereby form a kind of another embodiment.Similarly, also can change the size of assembly.

Claims

1. a stage apparatus (1) comprising:

At least one mast (3 that constitutes by modular member (7), 5,113), described modular member (7) is designed to removably interconnect according to end-to-end relation, each root in the described at least one mast all is positioned on the ground, and described each modular member (7) all is designed to form the step of equi-spaced apart and is used as a species stage;

Levelling bench (13), it is can be installed on the described at least one mast along the mode that described at least one mast easily moves up and down, described platform comprises and is formed with at least one sleeve pipe (17,19) framework (15), one in the corresponding described at least one mast is passed this sleeve pipe (17,19) extend, described platform also comprises a platform floor (21); And

Elevating mechanism is used for moving up and down described platform (13) along described at least one mast, and described elevating mechanism is installed on the described platform and can operates on it from described platform;

It is characterized in that: described elevating mechanism comprises:

-main hydraulic cylinder (73), described main hydraulic cylinder (73) have one with the sleeve pipe (17 of described platform, 19) upper end (74) that pivots and connect, an and lower end, this lower end is outstanding certainly to have free-ended piston (75), at least one uncinus (77) is installed on the described piston (75) pivotally, is used for being meshed with described step along corresponding mast equi-spaced apart

-at least one hook-type bar (79,81), described hook-type bar (79,81) have a upper end (80) that is connected with described platform pivot, and a lower end, definite shape is made in described lower end and be designed to mesh and be hooked on the step of corresponding mast; And

Hydraulic cylinder after-at least two (83,84) is used for applying lateral pressure to described main hydraulic cylinder (73), and drives described hook-type bar (79,81), to force described hook-type bar (79,81) alternately to mesh described step or to withdraw from described step;

Thus, when the piston of described main hydraulic cylinder was pushed downwards, described platform had been raised, thereby had improved the efficient and the speed of entire mechanism.

2. stage apparatus as claimed in claim 1 is characterized in that: described device also comprises:

Attached module platform component (101,103), when needed, it removably is connected with the framework (15) of described platform (13), to prolong the length and the width of described platform (13).

3. stage apparatus as claimed in claim 1 or 2, it is characterized in that: described at least one mast (3,5,113) each modular member (7) of each root is all made by metal sheet (61) in, described metal sheet (61) is the pipe of rectangle through folding and welding and form the cross section, be shaped on bigger hole (63) in described rectangular section tube, to form described step and to make described parts (7) be stairstepping, described effective transverse bar (49) is reinforced.

4. stage apparatus as claimed in claim 3, it is characterized in that: each modular member (7) is connected on the adjacent modules parts by upwardly extending screw, one end of each modular member (7) is welded with one group of longitudinally guiding bar (55), described modular member (7) is located mutually according to end-to-end relation and fix together.

5. as claim 1,2 or 4 described stage apparatus, it is characterized in that: each root in the described at least one mast all has upwardly extending pedestal (9) on the top of a bigger gripper shoe (25), described gripper shoe (25) jack (27) interior with being contained in described pedestal (9) links to each other, described pedestal (9) also has outside framework (29), at least one arm of stability (33,37) be connected on the described outside framework (29), greatly improve the height of described stage apparatus thus and regulated, and improved the lateral stability of described stage apparatus greatly.

6. as claim 1,2 or 4 described stage apparatus, it is characterized in that: at least one sleeve pipe (17 that comes to locate and guide described platform (13) by the l shaped gasket of making by the super high molecular weight plastic material (97) along corresponding mast, 19) each in, when described platform (13) when moving up and down, described pad just contacts the corner of corresponding mast and slides along the corner of described corresponding mast, can obtain level and smooth thus and motion reliably.